Seiko Cal. 4578 - 846

The Seiko 4578-846 represents an important milestone in Seiko's 1971 lineup. Powered by the 4578 caliber with 21j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-aa884138edbc]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1971

Related Models

• Seiko 4411-212
• Seiko 6258-114
• Seiko 4458-847
• Seiko 5260-718
• Seiko 5623-260
• Seiko 6365-256
• Seiko 6327-239
• Seiko 4544-967
• Seiko 4538-295
• Seiko 5669-523
• Seiko 7138-464
• Seiko 0736-299